/Engine/Plugins/Runtime/StateTree/Source/StateTreeModule/Public/StateTreeTypes.h
template<typename T> [TEnableIf](API\Runtime\Core\Templates\TEnableIf)< [TIsDerivedFrom](API\Runtime\Core\Templates\TIsDerivedFrom)< T, [UObject](API\Runtime\CoreUObject\UObject\UObject) >::IsDerived, T & >::Type GetMutable() const